From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: snd-usb-audio dying on jackd xruns Date: Wed, 02 Feb 2011 18:33:04 +0100 Message-ID: <4D499550.2070508@ladisch.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id 33A8A2474D for ; Wed, 2 Feb 2011 18:32:57 +0100 (CET) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Rods Bobavich Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Rods Bobavich wrote: > So I start jackd and it runs fine for a while. Then ALSA crashes and > triggers an xrun. Jackd continues to do its merry thing - minus the part > about spitting info out to my soundcard... > > At first I thought this was a Jackd issue but when I looked deeper it seems > to be ALSA. Once this happens I cannot restart jackd and resume an audio > session. In fact, I cannot even rmmod snd-usb-audio. Sometimes I cannot > lsusb. So it looks like something is getting seriously hosed! Looks like a bug in the USB controller driver, probably triggered by some unexpected behaviour of your USB controller. When this happens, are there any error messages in the system log? Regards, Clemens